US Treasury repo plan drives yields down, Bitcoin surges 8.7%

On August 19, the U.S. Treasury Department announced that it would at least double its long-term treasury bond repurchase scale starting from September 9. Bitcoin surged 8.7% and hit an intraday high of US$69,749. This was the largest one-day gain in Bitcoin since March 4, driven not by cryptocurrency-related events, but by government announcements on debt management.

Bitcoin's rise is in line with a simple macroeconomic argument: larger bond buybacks put downward pressure on long-term yields. If this downward pressure causes benchmark yields to fall significantly, it could trigger a weaker dollar, easing financial conditions and a lower opportunity cost of holding Bitcoin.

In this context, the word "if" is crucial. According to Treasury officials, the plan is designed to increase the liquidity of old bonds rather than provide monetary stimulus. However, the scale of the plan remains insignificant compared to the entire treasury bond market.

Why a debt management announcement can shake the crypto market

The market initially followed the chain almost step by step. U.S. long-term Treasury yields fell by 10 basis points at one point, the 10-year yield fell by about 6 basis points to 4.66%, and the U.S. dollar index fell 0.84% to 98.80. Gold gained 4.05%, while Bitcoin gained 6.06% in the market snapshot before climbing to higher intraday highs.

This does not mean that this process can be called a "streamlined version of quantitative easing" from a technical perspective. Quantitative easing (QE) is defined as the central bank purchasing assets and expanding its balance sheet, while treasury bond repurchase is a debt management operation. However, if the market reaction is lower yields and a weaker dollar, then this difference is not important to Bitcoin traders in the short term.

The position factor played an extremely important role in this volatility. According to data from a data platform, short cryptocurrency positions worth US$1.16 billion were cleared within one hour, of which US$673.73 million were Bitcoin positions. The surge comes after the U.S. Securities and Exchange Commission's decision on August 18 to propose exemptions for certain crypto asset issuers from registration, and the White House's meeting with crypto regulators and financial regulators on August 19.

The real purpose of repurchase

The goal of the U.S. Treasury is liquidity. In an announcement on August 19, it increased the maximum single-operation purchase size for 10-to 20-year and 20-to 30-year nominal securities from $2 billion to at least $4 billion until November 4. The Treasury attributed the decision to strong demand in long-term areas.

Research conducted by the New York Fed highlights this issue. At the time of the study, total U.S. Treasury debt exceeded US$30 trillion, but at the same time, new Treasury bonds accounted for less than 4% of the total, but generated 65% of the average daily trading volume. As bonds change from new to old bonds, trading volumes fall and transaction costs rise.

Size remains an important factor. Although buybacks can provide more liquidity and affect positions, they cannot eliminate the factors behind the rise in yields. In fact, yields are still rising despite an expected $2 billion repurchase of 20-to 30-year bonds on August 18.

Yields, not headlines, still anchor prices

In an August 19 report, Glassnode made similar observations about Bitcoin. Before the rise, Bitcoin was almost at a cyclical low, hovering around $60,000 to $65,000, when the 10-year Treasury yield approached 4.7%. High nominal and real yields constitute key macro constraints that limit Bitcoin's performance and bring it closer to a liquidity sensitive risky asset than an inflation hedge.

According to Glassnode, the short-term holder cost base is US$68,500, which is below the real market average of US$75,800, a common pattern in capitulation events. The achieved profit-to-profit ratio is 0.75, which is still significantly higher than the historical level of below 0.5 that is considered to be seller exhaustion.

Against this backdrop, the rally that began Wednesday suggests that Bitcoin can respond strongly to changes in yields. However, this does not prove that a new market landscape has begun.

The story of mobility across borders

Arthur Hayes, chief investment officer of Maelstrom, has always believed that the breadth of government debt management and the availability of US dollar liquidity may have a greater impact on Bitcoin's performance than any specific news related to the cryptocurrency industry. In an article published in December 2025, Hayes even showed how bond buybacks could lead to a decline in long-term yields.

"I believe Basent will use repurchase to buy 10-year Treasury bonds, thereby reducing yields."-- Arthur Hayes

Hayes 'views are broader than those of the Treasury, so they need to be viewed as a macro argument rather than an official government position.

There is less speculation in international transmission channels. A study conducted by the Bank for International Settlements covering 184 countries found that global flows of Bitcoin, Ethereum and some major stablecoins reached a peak of approximately US$2.6 trillion around the end of 2021. The main drivers of cross-border flows of native crypto assets are global volatility, credit spreads and financing conditions.

"Our findings highlight speculative motives and global financing conditions as key drivers of the flow of native crypto assets."-- Bank for International Settlements Working Paper No. 1265

Because of this, September 9 has become more important than the ordinary date on the Treasury calendar. If larger buybacks regularly increase liquidity at the long end of the curve, causing bond yields to fall and the US dollar to weaken, then Bitcoin's rise could be seen as an initial response to loose global financial conditions. However, if yields rise again, the event will be seen simply as a massive short squeeze rather than the beginning of a liquidity-driven recovery.

Are bond yields more important than crypto-native news?

The size of the U.S. Treasury bond market is approximately US$32 trillion, while the size of repurchase is in the billions. The report clearly pointed out that the planned US$83 billion in quarterly purchases only accounts for a small portion of the market. The Ministry of Finance's decision to expand buybacks suggests its intention to intervene in the stressed long-term bond market, pushing yields lower. The market reaction was as follows: Bitcoin rose 6.06%, Ethereum rose 10.13%, gold rose 4.05%, the US dollar index fell 0.84%, and long-term government bond yields fell sharply.

If Bitcoin responds to government bond market intervention like traditional liquidity-sensitive risk assets, traders may need to focus on 10-year/30-year yield spreads, real yields, dollar liquidity, Treasury auctions, and ETF traffic and crypto positions.